Web Supplement

The links on this page refer to the articles from the Autumn 2009 issue of "Switched On".

CAS PUBLICATIONS

Computing: The State Of The Nation
CAS Conference Report 2009
Programming Activities For KS3
Order a free copy of Hi-tech Trek

Page 2

CAS AIMING TO INFLUENCE INITIAL TEACHER TRAINING

The work of the students can be seen after Dec 1st at http://tinyurl.com/casnews011

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EDUCATE, ENGAGE, ENCOURAGE : THE COMPUTING MESSAGE

Give Your Kids The IT Edge (PCPro)
Back To The Motherboard (TES)
The Wired article on the 'Processing' progamming language 
ICT For The UK's Future (Royal Academy of Engineering)

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ENCOURAGE YOUR PUPILS WITH THESE COMPETITIONS

Animation10
The British Informatics Olympiad website
 

'BUILD YOUR OWN BLOCKS' LEARNING WITH SCRATCH

An excellent introductory article on Scratch
Build Your Own Blocks

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MATHS MATTERS IN COMPUTER SCIENCE

Maths Matters videos

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A PAUSE FOR THOUGHT

1.
A := A + B
B := A - B //B:=(A+B)-B =A
A := A - B //A:= (A+B)-A =B
For non-arithmetic operators (and in general) consider exclusive OR (XOR); for strings only consider concatenate and split
2.
(square) Area grazed is 1/4 of a circle of the length of the tether
(triangle) Area is 1/6th of circle
(circle) Consider two circles intersecting, one the field, and the other defined by the tether. The moon shaped area not grazed must also be A/2 and the shape is known as a LUNE.
The area of a lune is a hard classical problem - see for example http://mathworld.wolfram.com/Lune.html